TITLE

The Effects of Trailer Scheduling on the Layout of Freight Terminals

AUTHOR(S)
Gue, Kevin R.
PUB. DATE
November 1999
SOURCE
Transportation Science;Nov99, Vol. 33 Issue 4, p419
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Supervisors in a less-than-truckload freight terminal establish material flows inside the terminal by assigning incoming trailers to open doors. A common scheduling strategy is to look ahead into the queue of incoming trailers and assign them to doors to minimize worker travel. We develop a model of the resulting material flows and use it to construct layouts that exploit this type of scheduling policy. Based on data from a test site, our results suggest that look-ahead scheduling alone can reduce labor costs due to travel by 15-20% compared to a first-come-first-served policy. Layouts constructed with the material flow model provide further savings of 3-30% in labor cost due to travel, depending on the mix of freight on incoming trailers and the length of the queue of trailers from which the supervisor makes assignments.
ACCESSION #
4292834

 

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